64 BRITTON : CUBAN PLANtTs NEw To SCIENCE 
in length; blades ovate-lanceolate, entire, 4-6 cm. long, 2 cm. 
wide or less, acuminate at the apex, rounded or obtuse at the 
base, strongly 3-veined with a very slender vein on each side near 
the margin; staminate flowers subcapitate at the ends of fili- 
form peduncles which are mostly as long as the petioles or longer, 
the heads about 6 mm. in diameter; pistillate flowers in small 
panicles on peduncles much shorter than the petioles; achene 
compressed, ovate, acute, pale, about 0.5 mm. long. 
River-banks, Banao Mountains, Santa Clara (Brothers Léon 
and Clement 4055, type; 5342). 
Pilea bullata Britton, sp. nov. 
Erect-decumbent, with rather stout, pilose-pubescent stems 
1-2.5 dm. long. Leaves ovate, 4 cm. long or less, coarsely cre- 
nate, obtuse or bluntly acute at the apex, obtuse or rounded at 
the base, glabrous and with very numerous, approximate, minute, 
linear raphides above, pilose-pubescent on the prominent veins 
beneath, the unequal pilose petioles 2 cm. long or less; stipules 
ovate, about 3 mm. long; inflorescence glomerate-paniculate, as 
long as the leaves or shorter; achene ovate, acute, about 0.5 mm. 
long, 
Damp woods among stones, between Bahia Honda and El 
Rosario, Pinar del Rio (Shafer 12018). 
Family PORTULACACEAE 
Portulaca cubensis Britton & Wilson, sp. nov. 
Perennial, 2-7 cm. high. Leaves oblong to elliptic, 3-4.5 
mm. long, I-2 mm. broad, rounded at the apex, acutish at the 
base, fleshy, the axils sparingly short-pilose; flowers mostly soli- 
tary; corolla yellow; sepals ovate-lanceolate, 5-5.5 mm. long, 3 
mm. broad at the base; petals obovate, 8-10 mm. long, 2-3.5 
mm. broad, rounded at the apex, cuneate at the base; capsule cir- 
cumsessile at about the middle; seeds blackish. 
Type collected in palm-barrens, Motembo, Santa Clara (Léon 
& Roca 8419). 
Family MENISPERMACEAE 
Hyperbaena acutifola Britton, sp. nov. 
A small tree with slender gray twigs. Leaves oblong-elliptic, 
coriaceous, 4-9 cm. long, 2-4 cm. wide, finely reticulate-veined on 
both sides with the midvein rather prominent, sharply acute at 
